张晨宇, 孟帅, 陈永, 等. 密闭空间改进型空气净化器流场及振动分析[J]. 中国舰船研究, 2021, 16(4): 173–178. doi: 10.19693/j.issn.1673-3185.02105
引用本文: 张晨宇, 孟帅, 陈永, 等. 密闭空间改进型空气净化器流场及振动分析[J]. 中国舰船研究, 2021, 16(4): 173–178. doi: 10.19693/j.issn.1673-3185.02105
ZHANG C Y, MENG S, CHEN Y, et al. Flow field and vibration analysis of improved air purifier in enclosed cabinet[J]. Chinese Journal of Ship Research, 2021, 16(4): 173–178. doi: 10.19693/j.issn.1673-3185.02105
Citation: ZHANG C Y, MENG S, CHEN Y, et al. Flow field and vibration analysis of improved air purifier in enclosed cabinet[J]. Chinese Journal of Ship Research, 2021, 16(4): 173–178. doi: 10.19693/j.issn.1673-3185.02105

密闭空间改进型空气净化器流场及振动分析

Flow field and vibration analysis of improved air purifier in enclosed cabinet

  • 摘要:
      目的  为改善某密闭空间空气净化器的振动与噪声水平,开展原型和改进型空气净化器流场及振动分析。
      方法  首先,对原型空气净化器开展振源机理分析;然后,基于保障服务经验,在满足“六性”设计和型式试验要求下提出改进方案;最后,采用ANSYS Fluent 和ABAQUS软件进行仿真分析以完成改进设计。
      结果  结果表明,在保持功率消耗、空气动力性能、净化效果、尺寸条件下,改进型空气净化器流场更加稳定,大幅减少了回流现象;固有频率和比刚度显著提高,低频区(工作区)振动响应明显改善,高频区通过敷设阻尼层吸收振动能量,系统振动总能量减少约9 dB(10 Hz~10 kHz)。
      结论  改进型空气净化器的减振降噪方案合理,振动噪声水平明显改善,这对于提高密闭空间环境控制能力,开展高效、低噪、低功耗、无害化气体净化处理研究具有参考意义。

     

    Abstract:
      Objectives  To improve the vibration and noise of an air purifier employed in enclosed cabinet, the flow field and vibration are analyzed for the prototype and improved air purifier.
      Methods  First, theoretical research is used to analyze the intrinsic vibration mechanism of the prototype air purifier, then improved schemes are proposed which satisfy the requirements of six properties (i.e. reliability, maintainability, supportability, testability, safety and environmental adaptability) and type tests based on the guaranteed service, design and manufacturing experience. Finally, the air purifier is redesigned according to simulations in ANSYS Fluent and ABAQUS software.
      Results  It is demonstrated that under the premise of the same power consumption, aerodynamic characteristics, purification effects and size, the improved air purifier has significant advantages. The flow field becomes more stable with significantly fewer backflows; the natural frequencies and specific stiffness are increased remarkably; the vibration is reduced dramatically in the low frequency range (operating region); and the energy in the high frequency area is absorbed by the damping layer. The total energy is decreased by approximately 9 dB (10 Hz−10 kHz).
      Conclusions  The improved scheme is reasonable and evidently improves the vibration and noise of the device. This study has practical significance for the control of compartment environments and research on innocuous gas purification with high efficiency, low noise and low power consumption.

     

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